Adjustable nozzle



y 1950 E. J. MARSHALL 2,513,503

ADJUSTABLE NOZZLE Filed Nov. 23, 1946 1 m2 7///% &

m a H Patented July 4, 1950 UNITED TATES. PATENT OFFICE 1 m iiiifiiom I sig'nor to Pest Control Limited, Harst'on, England, avBritish company Application November '23, we, Serial No. 712.001 n Great Britain Novembcm'z, 1945 4 Claims. (01. ass- 1 14) "l his invention rel-ates to an improved adjustable nozzle and is particularly concerned with the provision of an improved adjustable nozzle oi -thetype which produces a whirling spray, particularly for the spraying of orchards.

The known type of nozzle is provided at its forward end with an outlet orifice and is closed St -it"s rear end by a closure plate bored to form a plurality of jets spaced from the axis of the nozzle, each jet intersecting at an angle an axial planethrough the nozzle.

It has beendiscovered according to this invennon that a spray of more uniform particlesize and capable of greater variation in width can hepr'oduced by providing the spray nozzle with a plate having a plurality of jets spaced from theaxis of the nozzle, and means for varying the angle at which each jet intersects an axial plane through the nozzle. I

- Accordingly the present invention provides an improved adjustable nozzle of the type which produces a whirling spray, including a plate .provided with a plurality ofzjets spaced from the axis of.-"the nozzle, and means for varying the angle at "which each .jet intersects an axial plane through the nozzle.

' .Preferably the adjustable nozzle is internally tapered towards an outlet orifice at its forward end and is provided with a closure plate at its rear end, a plurality of apertures-in the closure plate spaced from the axis of-the nozzle, jet members associated with the apertures, and means for varying the angle at which each jet member intersects an axial plane through the nozzle, i. e. changes its angular displacement reletive to another such jet member.

The jet members may be associated with the apertures in the closure plate by means of balland-socket joints.

Preferably the apertures are enlarged rearwardly-"to form conical or part-spherical seatings which receive the rounded forward ends of iongitudinally bored jet members, the rounded rear ends of which are received in similar seatings in a co-axial supporting plate spaced from the closure plate. Provision is made for relative rotation of the two plates and for the relative axial motion between the two plates necessary to follow up the foreshortening of the jet members as their inclination varies.

The two plates may be co-axially mounted in the cylindrical barrel of a co-axial body piece receiving the rear end of the nozzle. The nozzle and closure plate may be permitted limited rotation but restrained from axial movement,

whilst the supporting plate is restrained from rotation :but is constrained by resilient means .to m'oveaxially so as .to follow up the foreshortening ofzthetjet members on rotation of the nozzle and-closure plate.

@A preferred embodiment of the invention will. now be described and illustrated with reference to "the accompanying drawingsin whi .Fig. 1 is .an elevationpartly in section .ofzan improved spray nozzle,

-Fig -2 isa plan View on an-enlarged scale of the rear faceaof the closure -plate,. I Fig-=3 is a section on the line III-III thereof .Fig. 4 is "a plan view on an enlarged scale of the front face of the supporting plate, v v Fig. :5 is a section onthe line V-V thereof, and

6. is an enlarged detail showing av jet member. Y

Referring now to Fig. 1 of the drawings, a.cy.- lindrical body vpiece .2 internally flanged at :its forward endreceives a conical-nozzle :l external-ly flanged at its rear end and seatingagainst a washer-3 retained .by the internal flange 0f the body piece. 'An adjusting ring 4, securedto thenozzle I-by a set screw 5, is mounted :for rotation-on the forwardend of the body piece l ne (ring 4 has a depending skirt cut away through and the cut away;portion "GOO-DESI": ates witha stop :1 projecting from the .bodypiece 2 to limit the :rotation of the ring .4. A closure plate-*8 .isrsecuredto the flanged=base of the nozzle l by screws 9 passing through :holes :lfl (see Figs. 2;-and :3). The plate 1.8 is {provided withconed seatings H receiving the hemispherical forward ends {of alongitudinally bored jet members I 2 .(Fi 6'). A flanged supporting plate l3 slidab'ly' mountedin the body piece, 2 is restrained from rotatiomby the reduced plain end of 1a 'SOIBWH 4 engaging in aslotiMa (Figsmi 311C), andzret ceives the hemispherical rear'cends :of :-:the jet membersnlz in coned'seatings s15. .Arcompression spring [6 bears on the rear face of the supporting plate I3 and is retained by a ring ll screwed into the rear end of the body piece 2. A coupling l8 provided with a washer l9 may be used for attaching the nozzle body to a spray lance or hose.

Preferably the seatings H in the closure plate 8 and the seatings I5 in the supporting plate l3 lie on pitch circles which are sections of a cone having its apex at the centre of the outlet orifice, so that when the jet members l2 each lie in an axial plane through the nozzle, 3, straight line can be drawn from the outlet orifice of the nozzle through the bores of the jet members. The nozzle is shown in this position in Fig. 1, with the stop I abutting one end of the cut-away portion .6 of the ring 4. As the ring 4 is rotated, the nozzle l turns on its seating washer 3 carrying with it the closure plate 8. The jet members H are progressively inclined and the sprin urged supporting platel3 follows uplth'e fore shortening of the jet members l2. A limit is set to the rotation of the ring 4 by the stop fl abutting the other end of the cut-away portion 6. 4

' closure plate in said cylindrical body piece, said I claim:

1. An adjustable whirling spray nozzle .Q 1

prising an internally forwardly tapered nozzlepiece, an outlet orifice at the forward end of larged apertures in said closure plate spaced from prising an internally forwardly tapered nozzle piece, a co-axial cylindrical body piece receiving therear end of said nozzle piece, an outlet orifice at the forward end of said nozzle piece, a coaxial circular closure plate carried on the real end of said nozzle piece, said closure plate and said nozzle being mounted for limited rotational movement only in. said body piece, a plurality of rearwardly enlarged apertures in said closure plate spaced from the axis thereof, a co-axial circular supporting plate mounted rearwardly of said supportingplatebeing mounted for axial movement only in said body piece, a like number of -forwardly enlarged apertures in said supporting plate spaced from the axis thereof, a like number ofv jet members associated with the two said the axis of said nozzle, asupporting plate "spaced l axially from said closure plate, a like number of forwardly enlarged apertures in said supporting plate spaced from the axis of said nozzle, a like number of jet members associated with the two said plates, the said jet members having rounded forward ends seating in said apertures in said closure plate and rounded rear ends seating in said apertures in said supporting plate, said closure plate being mounted for rotation relative to said supporting plate about the axis ofsaid nozzle to vary the inclination of said jet members,

and said closure plate and said supporting-plate being mounted for axial movement relative to one another to vary the distance between the two said plates as the inclination of the said jet members varies.

2. An adjustable whirling-spray nozzle comprising an internally forwardly tapered nozzle piece, a co-axial cylindrical body piece receiving the rear end of said nozzle piece, an outlet orifice at the forward end of said nozzle piece, a coaxial circular closure plate carried on the rear end of said nozzle piece, a plurality of rearwardly enlarged apertures in said closure plate spaced from the axis thereof, a'co-axial circular supporting plate mounted rearwardly of said'closure plate in said cylindrical body piece, a like number of forwardly enlarged apertures in said-supporting plate spaced from the axis thereof, alike number of jet members associated with the-two said plates, the said jet members having rounded forward ends seating in said apertures in said closure plate and rounded rear ends seating in said apertures i in said supporting plate, said closure plate being mounted for rotation relative to said supporting plate about the axis of said nozzle to vary-the inclination of said jet members, and said closure plate and said supporting plate beinglmounted for axial movement relative to one another to vary the distance between the two said plates as the inclination of the said jet members varies. I I

-3. An adjustable whirling spray nozzle= complates, the said jet members having rounded for- I ward ends seating in said apertures in said closure plate and rounded rear ends seating in said apertures in said supporting plate, and resilient means urging said supporting plate axially forward to-. wards said closure plate. v r v 4. An adjustable whirling spray nozzle comprising an internally forwardly tapered'nozzle piece, a co-axial cylindrical body piece receiving the rear end of said nozzle piece, an outlet Orifice at the forward end vof said nozzle piece, a co-axial circular closure plate carried on the rear;,e nd of said nozzle piece, a plurality of rearwardlyenlarged apertures in said closure plate arranged on a pitch circleya co-axial circular supporting plate mounted rearwardly of said closure. plate in said cylindrical body piece, a like numberof forwardly enlarged apertures in said supporting plate arranged on a second pitch circle, the two said'pitch circles forming sections of a cone have ing its apex at thecentre of the outlet orifice, a like number of jet members associated with the two said plates, the said jet members having rounded forward ends seating in said apertures in said closure plate'and rounded rear ends seating in said apertures in said supporting plate, said closure plate being mounted for. rotation relative to said supporting plate about the-axis of said nozzle to vary the inclination of said jet members, and said closure plate and said supporting plate being mounted for axial movement relative to one another to vary the distance between the two said plates as the inclination of the said jet members varies. Y

EDWAR OHN MARSHALL,"

REFERENCES- CITED UNITED "STATES PATENTS I Number Name I Date 1,221,861 H1111 ADI. 10,1917

2,405,375 Smith Aug. 194 

